Upon entering the psychedelic bat cave that was Traverse Temporal Gyrus (the latest installation at The Guggenheim from Animal Collective and film artist Danny Perez), you were immediately bathed in a surreal environment of swirling sound and floating images. The museum was abuzz last night as fans crowded in for this special one-day collaborative exhibit. Selling out almost instantly, The Guggenheim had to add an earlier show to accommodate the spiked interest.